Former Alaska Gov. Sarah Palin (R) has issued what may be a tacit endorsement of Christine O'Donnell, the Tea Party-backed outsider running against Delaware Rep. Mike Castle (R) in the state's Republican Senate primary.

Palin, a frequent Twitter user who has been known to discuss endorsements on her feed, retweeted a message Wednesday from conservative radio host Tammy Bruce in which Bruce called O'Donnell "great."

"Her election must [be] a major focus for us all," Bruce wrote of O'Donnell.

After Palin's retweet, that same message was distributed to her 244,000-plus followers.

The move has observers scratching their heads; while a retweet may not amount to an official endorsement, Palin's mention of O'Donnell comes pretty close.

O'Donnell staffers, unsure how to interpret the tweet, are still not treating it like one.